Knife-sharpener for self-feeders.



.. Neg-894,747.

. A IPATENTED JULY 28, 190s. E. RI NGLAN D KNIFE SHARP-EATER FOR SELFFEEDERS.

APPLICATION FILBD.0OT.16,-1907.

DAVID ERNEST RINGLAND, OF KILLARNEY, MANITOBA, CANADA.

KNIFE-SHARPENER FOR SELF-FEEDERS. i

Specification of Letters Patent.

Patented July 28, 1908.

Application filed October 16, 1907. Serial No. 397,705.

To all whom it may concern.-

Be it known that 1, DAVID ERNEST RING- LAND, of the village ofKillarney, in the Province of Manitoba, Canada, mason, have inventedcertain new and useful Improvements in Knife- Sharpeners forSelf-Feeders, of which the following is a specificatiom A My inventionrelates to an attachment applied on the sides of a feeder, in roximityto the knives which cut the sheath binding, and the object of theinvention is to rovide a simple sharpening attachment whic may be placedpermanently ontheself feeder and which can be thrown into and out ofengagement with the feeder knives at will, provision being made to allowthe grind stone to fluctuate for irregularities in the knife surface,and it consists essentially of a set of emery stones corresponding innumber to the number of the knives, su orted by individual arms carriedon two s ldable cross shafts supported at their ends in standardsextending from the sides of the feeder, each arm being free to rock atits connection with the upper shaft, and to move laterally or slide onthe lower shaft, means for restricting the position of the arms at onesideand spring means controlling the movement at the other, and meansfor sliding the rod, the parts being arranged and constructed ashereinafter more particularly described.

The figure in the drawings is a perspective view of my com leteinvention showing it attached to the si es of the feeder, and indisengaged position, a portion of some of the knives being broken awayfor the sake of clearness.

1, 2, are the sides of the ordinary self feeders used with a threshingmachine, and 3 is the feeder knife-bar, on which are adjusted the knives4, of any suitable or convenient design, there being eight knives shownin the drawing.

5 5 are standards bolted at 6 to the sides 1, 2, directly opposite eachother and above the shaft 3.

7 is a circular steel rod supported at its ends in bearings formed inthe standards, the ends extending therebeyond, one being forked at 7,and the other bored to receive a pm 8.

9 is a square steel rod above and parallel with the former rod,supported in the standards 5, and having its ends extending therebeyond,the one 10, forked, and the other bored to receive a pin 11, in this waybeing practically similar to the rod 7. The rods are substantially thesame length and have the forked ends adjacent.

12 12 aresprings encircling the rods and bearing at their one endagainst the outer face of the standard 5, and at the other against thesplit pins 8 and 11, respectively.

13 is a portlon of a quadrant having ratchet teeth thereon and extendingoutwardly from the standard 5, to which it is bolted, and 14 is a levercarrying a hand latch 15 and a detent 16, the detent operating on thequadrant. The lever is bolted at 17, at its lower end, to the lug 18',extending from the standard 5, and has its end arched, as shown in thedrawing.

19 is a link connecting the forked ends of the rods 7 and 9, and 20 is asecond link connecting the link 19 with the lever 14.

21 are arms or shanks bent at 22 onequarter of a turn, placing the upperportion at right angles to the lower portion.

23 are openings in the lower portion through which the rod 7 passes, theopenings being large enough to allow of lateral movement of the shanks.

24 are clamps or clips holding the upper ends of the shanks to the rod9, the clamps being designed to allow a rocking motion to the shank, butyet retain it in a definite position on the rod. The object of this willbe more clearly understood hereinafter.

25 are collars onthe rod 7, to the right hand side of the lower portionof the shank, and 26 are set screws whereby the collars may be held inany desired osition on the rod.

27 are collars to 1316 left hand side of the rod 7, being held inposition on the rod by set screws 28.

29 are spiral s rings, between the collar 27 and the shank, t e springencircling the rod 7.

30 are stones, preferably emery stones,

To more fully understand the operation of the different parts I will nowdescribe the same.

When it is desired to sharpen the knives the lever 14 is pulledoutwardly, and this pulls both the rods in the same direction as thelever. The operator throws the lever sufliciently to cause the stones toengage with the knives, it being readily seen that the clip 24 carriesthe shank with the red when the lever is moved. To avoid any chance ofthe stones being thrown over too far the collar 31 is used, and it canbe adjusted according to requirements. With the knives revolving and thestones engaging the same the knives are quickly sharpened, and owing tothe simplicity of the attachment and the speed with which. it can beused it should prove invaluable, as it appears that the greatest troublewith self feeders seems to be in keeping the knives roperly sharpened.Any irregularity in the face of the knife when grinding is allowed forby the shank being free to rock at its connection with the upper rod 9,and the stone is held against the face of the knife by virtue of thesprings 29.

What I claim as my invention is:

1. In a device of the class described the combination with the feederknives, and the side supports for the knives, of a set of opposingstandards extending from the aforesaid side supports, an n per and alower rod slidable in the standards, a hand lever for operating therods, a series of sharpening stones supported by shanks clamped to theupper rod and laterally movable on the lower rod, means on the rod forrestricting the position of the arms at one side, and spring meanscontrolling the movement at the other, as and for the purpose specified.

2. In a device of the class described the combination with the feederknives and the side supports for the knives, of a set of opposingstandards extending upwardly from the side supports, a lower circularrod slidable in the standards and having its one end fUllflKl and theother end extending beyond the opposing standards, a similar square rodslidable in the standards and above the latter rod, a link connectingthe forked ends of the rods, a lever linked with the latter link andoperating on a quadrant, a series of sharpening stones suspended inproximity to the knives by individual shanks said shanks having theirupper ends clamped to the square shaft, and an opening in. their lowerportion through which the circular rod passes, adj nstable collars onthe circular rod to one side of the shanks, adjustable collars on theeircular rod. to the other side of the shanks, springs enveloping therod between the shank and the latter collars, adjustable collars on therods adjacent the inner side of the standard onthe lever side, pinspassing through the free extending ends of the rods and springsenveloping the rods and extending between the pins and the adjoiningstandard, as and for the purpose specified.

Signed at Killarney, in the Province of Manitoba, this 1st day ofOctober, 1907.

DAVID ERNEST RINGLAND. lVitnesses JOHN LAURENCE, LORNE T. TWEED.

